Abstract
ZnSe/ZnSSe multi-quantum wells were grown on GaAs by metalorganic vapor phase epitaxy and investigated by photocurrent and photoluminescence measurements. Photocurrent spectra show clear excitonic peaks. The observed peaks were identified as light and heavy hole excitonic transitions by comparing the data to theoretical ones. Field dependent photocurrent measurements show features useable for modulator applications in the blue spectral range at energies above 2.7 eV at 300 K.
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